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Hardhat Verify

To verify your contract on kaia, you need to add the following configuration to your hardhat.config.js:

Mainnet​

module.exports = {
  etherscan: {
      apiKey: {
        kaia: "unnecessary",
      },
      customChains: [
        {
          network: "kaia",
          chainId: 8217,
          urls: {
            apiURL: "https://mainnet-api.kaiascan.io/hardhat-verify",
            browserURL: "https://kaiascan.io",
          }
        },
      ]
    }
}

Kairos​

module.exports = {
  etherscan: {
      apiKey: {
        kairos: "unnecessary",
      },
      customChains: [
        {
          network: "kairos",
          chainId: 1001,
          urls: {
            apiURL: "https://kairos-api.kaiascan.io/hardhat-verify",
            browserURL: "https://kairos.kaiascan.io",
          }
        },
      ]
    }
}

Verification Command​

Once the configuration is set up, you can verify your contract using the following Hardhat command:

npx hardhat verify --network <network> --contract contracts/MyContract.sol:MyContract <deployed_contract_address> [constructor_arguments...]

Hardhat V3 Users​

Hardhat V3 Notice

If you are using Hardhat V3, the above configuration may not work properly. For Hardhat V3 users, please verify your contracts directly through the KaiaScan web interface:

Hardhat V3 support through API verification is currently under development. We will provide updates when it becomes available.

Troubleshooting​

If you encounter any issues during the verification process, please contact us through our support page with details about the error.

Contact Support for Contract Verification Issues

Additional Resources​